Hydraulic shock absorber



M. D. TAYLOR HYDRAULIC SHOCK ABSORBER Aug. 14, 1923. www@ Filed Nov. 5,'1921 mi@ mm- Patented .ll-tug. lll, llge Mite/it@ MURLIN 1D. TAYLOR, 0FCHICAGO, ILLINOIS.

HYDRAULIC SHOCK ABSORBER.

application mea november e, 1am. serieu no. tratta To all whom it mayconcern.'

Be it known that I, MURLIN D. Tanon, a citizen of the United States, anda resident of the city of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in aHydraulic Shock Absorber; and I do hereby declare that the following isa full, clear, and exact description of the same, reference being had tothe accompanying drawings, and to the numerals of reference markedthereon, which form a part of this specification.

This invention relates to hydraulic shock absorbers and particularly toa device which is adapted to be installed between a vehicle body and therunnin gear thereof to modify the action of the ve icle spring and toprevent the transmission of shocks received by the running gear to thevehicle body.

1t is an object of this invention to provide a hydraulic shock absorberwherein a fluid retarded means is permitted to move through the fluid inone direction with less restriction than in the other direction.

lt is also an object ot this invention to provide a hydraulic shockabsorber having a valve retarding meanspermtting relatively freemovement of the vehicle body and running gear in one direction and re'tarding the relative movement thereof in the other direction.

lt is a further object of this invention to provide a shock absorberhaving an improved toggle connection between the vehicle body andrunning gear.

lt is an important object of this invention to provide an ecienthydraulic shock absorberwhich may be easily installedand economicallymanufactured.

e @ther and further important objects of this invention will be apparentfrom the disclosures in the specification and theoccompanying drawings:

The invention (in a preferred torni) is illustrated in the drawings andhereinafter more fully described.

@n the drawings:

Figure l is a fragmentary side elevation, with parts in section, of ashoch absorber installation embodying` the principles oit thisinvention. Figure 2 is an enlarged fragmentary section on the line' 2-2ot Figure lfwith parte in elevation.

.Figure 3 is a section on the line 3 3 of Flgure 2.

As shown on the drawin The shock absorber instattion of this inventionis adapted to be connected between a vehicle chassis l and the vehicleaxle 2 or any other suitable portion of the vehicle running gear to actas an auxiliary to the ordinary vehicle spring 3 in cushioning theshocks received by the vehicle running gear and preventing', thetransmission thereof to the vehicle body which is mounted on the.chassis 1.

lin the embodiment of the invention which is illustrated herein theshock absorber is particularly designed to check the rebound which iscaused by the flexing of the vehicle spring 3 due to shocks received by'the vehicle running gear, but it is of course evident that theinstallation might also be conveniently used as an auxiliary to thevehicle spring 3 for directly cushioning shocks which would not besuilcient to dex the vehicle spring 3.

The shock absorbing installation com l prises a segment shaped fluidcontaining casing which consists of a container meniber or portion 4which is provided with an inte al Harige 5 and the inner side of whichlis cised by a member or portion 6 which is shaped similarly to theportion d and which is provided with a flange 7 setting on 'the llange5, a suitable packing 8 ordinarily interposed between said lianges.

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Mldunted in the narrow end of the Casing 3 are bearings 9 and 9n whichare provided with threaded portions 10 and 11 which respectively extendoutwardly through apertures in the members 6 andy l and which have nutsl2 and 13 engaged thereon and abutting the outside ot said portions 6and it. Mounted in said bearing;I portions 9 and 9 is a shaft 1d, oneend ot which entends outwardly through the threaded portion 1l and has alever 15 keyed vthereon andscured in position by a nut l@ on the outerend of said shaft.

Pinned to an enlarged portion' ll' oit shaft lll by means or a pin 18 isa cylindrical hub 19 which is provided with a vane 20 which erft-endsoutwardly into the container which is afforded by the members 4 and 6and is movable in a duid such as oil or other suitahle liquid eh isintroduced into the container tryout, we

opening therein which is normally closed by a plug 21. The vane 20 is ofsuch dimensions that only a relatively small space is allowed forpassage of liquid between the edges of the same and the walls of thecontainer, and in order that a relatively free movement 0f the vane inthe fluid may be allowed in one direction, apertures 22 and 23 areprovided therein and are covered by flap valves 24 and 25 which aresecured to said vane by means of screws 26 and 27. Said Hap valves 24and 25 are constructed of resilient material so that when the vane movesthrough the liquid in an upward direction they will be Sprung downwardlyand the liquid will be permitted to flow through the apertures 22 and23, while when the vane moves through the liquid in a downward directionsaid valves will be closed over the apertures and the liquid onlypermitted to flow between the outer edges of the vane and the walls ofthe container., In order that the vane may be resiliently maintained inposition in the casing and in order thatthe leakage of liquid past thebearing portion 9*L may be permitted, a spring packing washer 28 isinterposed between the inner end of the bearing llportion 9a and the endof the hub portion 19. The container is secured to the vehicle chassis 1by means of screws or bolts 29 which are engaged through registerinapertures in the ianges 5 and 7, said bo ts or screws also acting tosecure the flanges together. Adjustably secured to the outer end of the1ever 15 is an elbow 30 which has pivotally connected thereto a link 31which extends downwardly past the vehicle spring Band is in turnadjustably connected to an elbow 32VV which is pivoted to a plate 33secured to the spring clips 34 on the under side of the vehicle axle 2.Thus a toggle connection is alforded between the outer end of the lever15 and the vehicle runnin gear, and the relative motion of the vehicerunning gear and the chassis or vehicle body is transmitted to the vane20 and this relative movement consequently retarded by said vane i-n onedirection.

The adjustable connections between the elbow 30 and the lever 15, andthe link 31 and the elbow 32, afford means whereby the installation maybe properly adjusted to the particular Vehicle on which it is mounted,and in the installation of the same it is only necessaryto secure thefluidV container in position by means of the bolts or screws 29 and tosecure the plate 33 in position on the spring clips 34, no substantialalteration of the vehicle being required.

By employing oil as a retarding fluid in the container it is possible toautomaticallyV lubricate the moving parts thereof and there isconsequently litt e wear and the device is long-lived.

It is of course understood that the apertures 22 and 23` may be made invarious shapes and sizes and that'the space left between the edges ofthe vane 20 and the walls of the Container may be varied to efect anydesired retardation.

On account of the-few parts embodied in the construction of the shockabsorber of this invention it may be economically manufactured, andbecause of the ease with which it may be installed and its desirablemotion retarding qualities it is particularly desirable for use oncommercial motor vehicles.

I am aware that numerous details of construction may be varied through awide range without departing from the principles of this invention, andI therefore do not purpose limiting the patent granted `otherwise thannecessitated by the prior art.

` I claim' as my invention:

A shock absorber comprising a segment shaped, fluid tight casing havingapertures in its restricted end, Hanged bearings extending through saidapertures with the flanges thereof resting against the inner surface ofthe casing, means for binding said bearings to said casing with a watertight fit, a shaft rotatably supported in said bearing and extendingthrough one of them, a vane secured upon said shaft within said casingand a lever secured to said shaft beyond said casing for the purposedescribed.

In testimony whereof I have hereunto subscribed my name in the presenceof two sub-.

scribing witnesses.

MURLIN D. TAYLOR. Witnees:

CARUroN HILL, Jam M. OBnmt.

